122215693 has 2 divisors, whose sum is σ = 122215694. Its totient is φ = 122215692.

The previous prime is 122215661. The next prime is 122215729. The reversal of 122215693 is 396512221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90878089 + 31337604 = 9533^2 + 5598^2 .

It is a cyclic number.

It is not a de Polignac number, because 122215693 - 2⁵ = 122215661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122215603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61107846 + 61107847.

It is an arithmetic number, because the mean of its divisors is an integer number (61107847).

Almost surely, 2^122215693 is an apocalyptic number.

It is an amenable number.

122215693 is a deficient number, since it is larger than the sum of its proper divisors (1).

122215693 is an equidigital number, since it uses as much as digits as its factorization.

122215693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 122215693 is about 11055.1206687218. The cubic root of 122215693 is about 496.2596804555.

The spelling of 122215693 in words is "one hundred twenty-two million, two hundred fifteen thousand, six hundred ninety-three".